1. The Influence of a Driver's Vision in Relation to His Driving;Liesma,1973
2. Visual factors in automobile driving and provisional standards;Arch. Ophthalmol.,1969
3. Visual standards for licensure to operate motor vehicles;Black;J.A.M.A.,1937
4. Factors in visibility and legibility of highway signs and markings;Forbes,1969
5. Abnormalities of the central visual pathways contributing to traffic accidents;Freytag;J.A.M.A.,1968